018 CDUS41 KBOX 220613 CLIBOS CLIMATE REPORT NATIONAL WEATHER SERVICE BOSTON/NORTON MA 213 AM EDT MON SEP 22 2025 ................................... ...THE BOSTON MA CLIMATE SUMMARY FOR SEPTEMBER 21 2025... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1872 TO 2025 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 66 312 PM 94 1895 71 -5 60 MINIMUM 51 627 AM 40 1904 56 -5 57 1929 AVERAGE 59 64 -5 59 PRECIPITATION (IN) YESTERDAY 0.00 2.77 1961 0.13 -0.13 0.90 MONTH TO DATE 1.55 2.41 -0.86 0.96 SINCE SEP 1 1.55 2.41 -0.86 0.96 SINCE JAN 1 26.50 30.45 -3.95 35.10 SNOWFALL (IN) YESTERDAY 0.0 0.0 2000 0.0 0.0 0.0 2001 2002 MONTH TO DATE 0.0 0.0 0.0 0.0 SINCE SEP 1 0.0 0.0 0.0 0.0 SINCE JUL 1 0.0 0.0 0.0 0.0 DEGREE DAYS HEATING YESTERDAY 6 3 3 6 MONTH TO DATE 29 31 -2 10 SINCE SEP 1 29 31 -2 10 SINCE JUL 1 36 40 -4 12 COOLING YESTERDAY 0 2 -2 0 MONTH TO DATE 45 78 -33 61 SINCE SEP 1 45 78 -33 61 SINCE JAN 1 802 778 24 871 ................................................................... WIND (MPH) RESULTANT WIND SPEED 4 RESULTANT WIND DIRECTION E (90) HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION E (100) HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION E (100) AVERAGE WIND SPEED 6.7 SKY COVER POSSIBLE SUNSHINE MM AVERAGE SKY COVER 0.5 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 83 600 AM LOWEST 56 400 PM AVERAGE 70 .......................................................... THE BOSTON MA CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 71 94 1895 MINIMUM TEMPERATURE (F) 56 35 1904 SUNRISE AND SUNSET SEPTEMBER 22 2025.....SUNRISE 632 AM EDT SUNSET 641 PM EDT SEPTEMBER 23 2025.....SUNRISE 633 AM EDT SUNSET 639 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$